Wall-mounted storage base



FIG. 1 is a front elevation view of a wall-mounted storage base showing the new design;

FIG. 2 is a back elevation view thereof;

FIG. 3 is a left-side view thereof;

FIG. 4 is a right-side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a front-top-right perspective view thereof; and,

FIG. 8 is a back-bottom-right perspective view thereof. 

CLAIM The ornamental design for a wall-mounted storage base, as shown and described. 